Home / 81,392,111.70-122,088,167.55-70,432,617.30

Finding the Fourth Proportional to 81,392,111.70, 122,088,167.55 and 70,432,617.30

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Solution

The fourth proportional to 81,392,111.70, 122,088,167.55 and 70,432,617.30 is: 105,648,925.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392,111.70 : 122,088,167.55 = 70,432,617.30 : x
  2. Step 2: Convert to fraction form
    81,392,111.70/122,088,167.55 = 70,432,617.30/x
  3. Step 3: Cross multiply
    81,392,111.70x = 122,088,167.55 × 70,432,617.30
  4. Step 4: Simplify right side
    81,392,111.70x = 8,598,989,181,907,428
  5. Step 5: Solve for x
    x = 8,598,989,181,907,428/81,392,111.70
  6. Step 6: Final answer
    x = 105,648,925.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.